sgemm_impl: Add tiling params for hopper tensor core

tests/regression/sgemm_tcore/sgemm_impl.hpp

@@ -17,6 +17,10 @@ using float_type = float;
 using float_type = float16_t;
 #endif
 
+// Generate kernel for the Hopper-style SMEM-decoupled tensor core.  This uses
+// asynchronous HGMMA and HGMMA_WAIT instructions.
+#define TENSOR_HOPPER 1
+
 // Constraints on parameters:
 // * Memory:
 //   (BM + BN) * BK * sizeof(T) <= sharedmem size.
@@ -29,6 +33,31 @@ using float_type = float16_t;
 //   (BM*BN) / (TM*TN) == threadblock size >= NT * CORES_PER_CLUSTER
 // * Combining BM * BK >= (BM*BN) / (TM*TN) == threadblock yields
 //   BM <= BK*TM*TN
+#if (TENSOR_HOPPER == 1)
+#define BM 128
+#define BN 64
+#if (FP_SIZE == 32)
+#define BK 64
+#elif (FP_SIZE == 16)
+#define BK 128
+#else
+#error "unsupported FP_SIZE"
+#endif
+
+#define WM 16
+#define WN 16
+#define TCM 16
+#define TCN 16
+#if (FP_SIZE == 32)
+#define TCK 16
+#elif (FP_SIZE == 16)
+#define TCK 32
+#else
+#error "unsupported FP_SIZE"
+#endif
+
+#else // !HOPPER
+
 #define BM ((NUM_CORES == 8) ? 128 : 64)
 #define BN 64
 #if (FP_SIZE == 32)
@@ -38,6 +67,7 @@ using float_type = float16_t;
 #else
 #error "unsupported FP_SIZE"
 #endif
+
 #define WM 16
 #define WN 8
 #define TCM 8
@@ -49,6 +79,8 @@ using float_type = float16_t;
 #else
 #error "unsupported FP_SIZE"
 #endif
+#endif
+
 #define WMITER (WM / TCM)
 #define WNITER (WN / TCN)
 #define ELEM_PER_THREAD (WM * WN / NUM_THREADS)